Dissertations / Theses on the topic 'Espaces de Morrey'
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Llerena, Montenegro Henry David. "Sur l'interdépendance des variables dans l'étude de quelques équations de la mécanique des fluides." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASM048.
Full textThis thesis is devoted to the study of the relationship between the variables in the micropolar fluids equations. This system, which is based on the Navier-Stokes equations, consists in a coupling of two variables: the velocity field vec{u} and the microrotation field vec{w}. Our aim is to provide a better understanding of how information about one variable influences the behavior of the other. To this end, we have divided this thesis into four chapters, where we will study the local regularity properties of Leray-type weak solutions, and later we will focus on the regularity and uniqueness of weak solutions for the stationary case. The first chapter presents a brief physical derivation of the micropolar equations followed by the construction of the Leray-type weak solutions. In Chapter 2, we begin by proving a gain of integrability for both variables vec{u} and vec{w} whenever the velocity belongs to certain Morrey spaces. This result highlights an effect of domination by the velocity. We then show that this effect can also be observed within the framework of the Caffarelli-Kohn-Nirenberg theory, i.e., under an additional smallness hypothesis only on the gradient of the velocity, we can demonstrate that the solution becomes Hölder continuous. For this, we introduce the notion of a partial suitable solution, which is fundamental in this work and represents one of the main novelties. In the last section of this chapter, we derive similar results in the context of the Serrin criterion. In Chapter 3, we focus on the behavior of the L^3-norm of the velocity vec{u} near possible points where regularity may get lost. More precisely, we establish a blow-up criterion for the L^3 norm of the velocity and we improve this result by presenting a concentration phenomenon. We also verify that the limit point L^infty_t L^3_x of the Serrin criterion remains valid for the micropolar fluids equations. Finally, the problem of existence and uniqueness for the stationary micropolar fluids equations is addressed in Chapter 4. Indeed, we prove the existence of weak solutions (vec{u}, vec{w}) in the natural energy space dot{H}^1(mathbb{R}^3) imes H^1(mathbb{R}^3). Moreover, by using the relationship between the variables, we deduce that these solutions are regular. It is worth noting that the trivial solution may not be unique, and to overcome this difficulty, we develop a Liouville-type theorem. Hence, we demonstrate that by imposing stronger decay at infinity only on vec{u}, we can infer the uniqueness of the trivial solution (vec{u},vec{w})=(0,0)
Alves, Bruno Ferreira 1988. "As equações de Navier-Stokes em espaços de Morrey." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307598.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica
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Resumo: Estudamos as equações de Navier-Stokes (NS) em...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: We study the Navier-Stokes equations (NS) in...Note: The complete abstract is available with the full electronic document
Mestrado
Matematica
Mestre em Matemática
Amaral, Sabrina Suelen [UNESP]. "Boa colocação das equações de Navier-Stokes em espaços de Morrey." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/148907.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Neste trabalho analisamos as equações de Navier-Stokes em R^n, (n≤3) e mostramos boa colocação global, quando a velocidade inicial pertence ao espaço de Morrey e tem norma suficientemente pequena. Mostramos, também, que se o dado inicial é uma função homogênea de grau -1 então as soluções mild são autossimilares. Além disso, apresentamos um resultado de estabilidade assintótica das soluções mild.
In this work we will analyze the Navier-Stokes equations in R^n, (n≤3) and we will show global well-posedness, when the initial velocity belongs to the Morrey space and with a sufficiently small norm. We will also show that if the initial data is a homogeneous function of degree -1, then the mild solutions are self-similar. Moreover, we will present an asymptotic stability result of the mild solutions.
Amaral, Sabrina Suelen. "Boa colocação das equações de Navier-Stokes em espaços de Morrey /." São José do Rio Preto, 2017. http://hdl.handle.net/11449/148907.
Full textBanca: Waldemar Donizete Bastos
Banca: Lidiane dos Santos Monteiro Lima
Resumo: Neste trabalho analisamos as equações de Navier-Stokes em R^n, (n≤3) e mostramos boa colocação global, quando a velocidade inicial pertence ao espaço de Morrey e tem norma suficientemente pequena. Mostramos, também, que se o dado inicial é uma função homogênea de grau -1 então as soluções mild são autossimilares. Além disso, apresentamos um resultado de estabilidade assintótica das soluções mild
Abstract: In this work we will analyze the Navier-Stokes equations in R n, (n ≥ 3) and we will show global well-posedness, when the initial velocity belongs to the Morrey space M p, λ and with a sufficiently small norm. We will also show that if the initial data is a homogeneous function of degree −1, then the mild solutions are self-similar. Moreover, we will present an asymptotic stability result of the mild solutions
Mestre
Lima, Lidiane dos Santos Monteiro 1984. "Sobre uma família de EDP's do tipo escalar ativo em espaços críticos de Lebesgue e Fourier-Besov-Morrey." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307595.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática Estatística e Computação Científica
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Resumo: Nesta tese consideramos uma família de EDPs dissipativas do tipo escalar ativo cujos campos velocidades são acoplados aos escalares através de operadores multiplicadores de Fourier que podem ser de alta ordem. Na primeira parte, provamos boa-colocação global, decaimento de normas Lp, e algumas propriedades de simetria, para dados iniciais no espaço de Lebesgue crítico e sem assumir condição de pequenez. Na segunda parte, introduzimos os espaços de Fourier-Besov-Morrey, o qual parece ser novo na analise de EDPs, com o objetivo de encontrar soluções auto-similares e considerar uma classe maior de acoplamentos e dados iniciais. Condições de pequenez na norma do espaço são assumidas para estes resultados. Além disso, mostramos um resultado de estabilidade assintótica e obtemos uma classe de soluções assintoticamente auto-similares
Abstract: In this thesis we consider a family of dissipative active scalar equations whose velocity fields are coupled by means of multiplier operators that can be of high-order. In the first part, we prove global well-posedness, decay of Lp's norms and some symmetry properties of solutions for initial data in the critical Lebesgue space and without smallness condition. In the second part, we introduce the Fourie-Besov-Morrey spaces, which seems to be new in the analysis of PDEs in order to find self-similar solutions and to consider a larger class of couplings and initial data. Smallness conditions on the norm of the space are assumed for these results. Furthermore, we show an asymptotic stability result and obtain a class of asymptotically self-similar solutions
Doutorado
Matematica
Doutora em Matemática
Lazar, Omar. "Etude de la régularité des solutions faibles d’énergie infinie d’une équation de transport non locale." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST1014/document.
Full textIn this thesis, we adress the study of weak infinite energy solutions for the critical dissipative quasi geostrophic (SQG) equation. We also study a 1D transport equation with non local velocity. More precisely, we consider the (SQG) equation equation with data in Morrey-Camapanto type spaces and the other equation in a weighted Lebesgue spaces. Both spaces generate infinite energy solutions. Regarding the 1D equation with non local velocity, the existence of weak Morrey solutions is not easy to obtain, this is due to the fact that the non linearity is not written in a divergence form. Nevertheless, we are able to adress the study this 1D equation in a weigted Lebesgue space and this also provides infinite energy solutions. In a first part, we show that for any initial data lying in a Morrey-Campanato space for large enough oscillations, we have global existence of weak solutions. The proof is based on the study of the truncated equation (on a ball of radius $R>0$ centered at the origin) associated with a truncated et regularized initial data (by making a convolution with a standard mollifer). We obtain emph{a priori} estimates that give rise to an energy inequality. Then, we treat the case of small oscillations, namely $0
Fernandes, de Almeida Marcelo. "Existência e comportamento assintótico de soluções em espaços de Morrey para as equações de Boussinesq no Rn e de Navier-Stokes no semi-plano Rn+." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/7339.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
Nesta tese, estudamos dois modelos de mecânica dos fluidos em espaços de Morrey, os quais contêm funções fortemente singulares. O primeiro modelo é o sistema de Boussinesq (SB) em Rn, e o segundo, as equações de Navier-Stokes (ENS) no semi-espaço Rn +: Provamos novos resultados de existência global de soluções, de simetria auto-similar, de regularidade e de comportamento assintótico das soluções. Nossos resultados nos permitem considerar novas condições iniciais e campos gravitacionais singulares
VIEIRA, JUNIOR R. R. M. "UMA ARQUITETURA DE SOFTWARE PARA O MORFEU: APOIANDO A REALIZAÇÃO DE ARQUITETURAS PEDAGÓGICAS EM ESPAÇOS VIRTUAIS COLABORATIVOS." Universidade Federal do Espírito Santo, 2011. http://repositorio.ufes.br/handle/10/4243.
Full textAs lacunas tecnológicas no apoio as atividades colaborativas possibilitam à criação de novas propostas para atender à demanda por suporte tecnológico nas atividades a distância. Este trabalho apresenta uma arquitetura de software, baseado da proposta do MOrFEu, que favorece à criação e a organização flexível de espaços virtuais colaborativos. Entre as principais características desta arquitetura destacam-se a flexibilidade do apoio a colaboração pelas formas diferenciadas de coordenar as interações e organizar as produções, individuais e coletivas, tendo como referência espaços de autoria reorganizáveis e flexíveis. Por fim, foi realizado um estudo de caso, utilizando um protótipo de software, na avaliação do suporte tecnológico no atendimento aos requisitos das atividades de comunicação, cooperação e principalmente de coordenação da Arquitetura Pedagógica Debate de Teses.
Vieira, Júnior Ramon Rosa Maia. "Uma arquitetura de software para o MorFEu : apoiando a realização de arquiteturas pedagógicas em espaços virtuais colaborativos." Universidade Federal do Espírito Santo, 2011. http://repositorio.ufes.br/handle/10/6415.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
As lacunas tecnológicas no apoio às atividades colaborativas possibilitam a criação de novas propostas para atender a demanda por suporte tecnológico nas atividades a distância. Este trabalho apresenta uma arquitetura de software, baseado da proposta do MOrFEu, que favorece a criação e a organização flexível de espaços virtuais colaborativos. Entre as principais características desta arquitetura destacam-se a flexibilidade do apoio a colaboração pelas formas diferenciadas de coordenar as interações e organizar as produções, individuais e coletivas, tendo como referência espaços de autoria reorganizáveis e flexíveis. Por fim, foi realizado um estudo de caso, utilizando um protótipo de software, na avaliação do suporte tecnológico no atendimento aos requisitos das atividades de comunicação, cooperação e principalmente de coordenação da Arquitetura Pedagógica Debate de Teses
Magnan, Édith. "L'"Espace Pliable" : une structure modulable comme capture de moment." Thesis, Paris 1, 2014. http://www.theses.fr/2014PA010505.
Full textIn order to have the experience of it, this thesis explores the idea of what's called Foldable Space, meaning a "modulable structure as captured time". Space represented through an artwork, is not only considered as a three-dimensional environment that the spectator moves through, but as an event which questions and reaffirms its spatiality. Constantly moving, because foldable, do we know precisely where the encounter happens? Where it folds and unfolds? As part of my art practice, developing the idea of a Foldable Space, these works made to be unfurled and bent, folded and unfolded, question both the volume from the perspective of its extension and the expanding "field of sculpture". Using a corpus of works mainly from the 1960s to the present day, the thesis linked to this artwork intends to identify and analyse some of the different spatial and temporal relationships at work. Summoning artists such as Robert Morris, Franz Erhard Walther or the architect Hans-Walter Müller, the imperative of this research is to study space in regard to its sculptural and aesthetic characteristics, mainly in order to reconsider our experience of this space. Very nearly a sculptural practice, these installations between visible and invisible, tangible and intangible, seem "to capture" nothing but "space". Supported by Deleuze's analysis of the fold as a dynamic system - because foldable - once inside one of my cubic sculptures, the sculpture becomes a witness of the time the spectator spends with it
Nguyen, Quoc-Hung. "THÉORIE NON LINÉAIRE DU POTENTIEL ET ÉQUATIONS QUASILINÉAIRES AVEC DONNÉES MESURES." Phd thesis, Université François Rabelais - Tours, 2014. http://tel.archives-ouvertes.fr/tel-01063365.
Full textMitran, Emilie. "Gouverneur Morris, traducteur de la Révolution française, 1789-1793." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0139.
Full textGouverneur Morris’s ambivalent republican vision is at the center of this study which addresses the polyphonic nature of Atlantic history through the study of the American Founder’s private diary. Can republicanism – understood as a universal language – be adopted by all? Morris’s experience tends to suggest the reverse. Hence, this research endeavours to understand the political career of this former Patriot who, when he settled in Paris, turned into an ally of the French monarch. Since he had witnessed the American Revolution and had taken part in the process of nation-building, the New Yorker wielded influence and distilled his revolutionary knowledge in France, keeping a diary from 1789 until January 1793 which thus enabled historians on both sides of the Atlantic to keep track of him during his stay in Paris. By connecting Morris to his contemporaries or various historiographical voices, this study contrasts his own private story with a collective, official history, and will attempt to replace this American within the Atlantic space, both as the translator of a republican language and of an individual experience of the French Revolution
Almeida, A. C. D. "Forma??o do territ?rio sul mineiro: n?cleos urbanos, fazendas e caminhos." Pontif?cia Universidade Cat?lica de Campinas, 2016. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/932.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
This research aims to follow an analysis of Minas Gerais south territory formation, investigating the formation of the first ways starting from many locations of the colony and exploring the Brazilian sert?o searching for gold and aborigines for slavery. It's analyzed the important urban nucleus at the Comarca Rio das Mortes and the elevation of the Campanha da Princesa vill which owns the espace that was formed by many reasons in the south Minas region, since the population that was born in the mineral deposit areas found as also nucleus that were stablished in exchange spots, commerce and farming activities focused on internal and external supply. It is investigated also the evolution of these nucleus and the conflicts that happened in their terms until the materialization of this territory. All of the study seeks to relate these transformations to what was happening in the economy of the colony and the metropole emphasizing the importance of the south Minas urban nucleus, until it comes to the rural patrimony that exist until theses days as inheritance of this mixed economy, aiming to understand that the history of Minas Gerais, goes beyond the gold and mining. The study has as its objective to show that Minas is a complex mixture of different activities and factors that contributed for its formation.
Este trabalho busca tra?ar uma an?lise da forma??o do territ?rio no sul de Minas Gerais, investigando a forma??o dos primeiros caminhos, partindo de diversas localidades da col?nia e desbravando os sert?es em busca de ouro e ?ndios para escravid?o. Analisamos a importante rede de n?cleos urbanos na Comarca do Rio das Mortes e a eleva??o da Vila de Campanha da Princesa, detentora do espa?o que se formou por diversos motivos na regi?o do sul de Minas, desde as povoa??es que nasceram pelas jazidas encontradas at? os n?cleos que se estabeleceram em pontos de troca, com?rcio e das atividades agropastoris voltadas para o abastecimento interno e externo. Investigamos tamb?m a evolu??o desses n?cleos e os conflitos que ocorreram em seus termos, at? chegar ? materializa??o deste territ?rio. Todo o estudo busca vincular essas transforma??es com o que estava acontecendo na economia da col?nia e da metr?pole, enfatizando a import?ncia dos n?cleos urbanos do sul de minas, at? chegar aos patrim?nios rurais que temos como heran?a desta economia mista, e buscando entender que a hist?ria de Minas Gerais vai al?m do ouro e da minera??o. O estudo tem como inten??o, em suma, mostrar que Minas ? um conjunto complexo de diversas atividades e fatores que contribu?ram para a sua forma??o.
Prieto, Aguaza Alberto. "Imagen fotográfica y textualidad. La obra de Wright Morris, Duane Michals y Sophie Calle." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7442.
Full textAparentemente la función de la imagen es la de ilustrar la acción que se desarrolla en el texto, mientras que éste debe explicar lo que vemos en aquella. Más allá de esta complementariedad, las relaciones se amplían en el caso de la imagen fotográfica, frente a las imágenes sintéticas, debido a su especial estatus como index. El diálogo entre ambos medios expresivos genera una alteración mutua, tanto de las coordenadas espacio-temporales como de la noción de referencialidad: ni una fotografía es sólo un documento real ni un texto literario una ficción. Se observan estas relaciones en la obra de Wright Morris, Duane Michals y Sophie Calle mediante un elemento visual y conceptual característico de cada uno de ellos -ventana, espejo y sombra- que relaciona la manera de conocer el mundo y de conocerse uno mismo.
At first sight, the role of the image is to illustrate the action taking place within a text, whereas this one has to explain what we see in the image. Beyond this collaboration, we find deeper relationships when talking about photographic image, in opposition to synthetic images, due to its special status as index. Dialogue between photography and a so-called literary text creates a mutual alteration, related not only to time and space but also to the question of referentiality: neither a photograph is only a real document nor a text is a fiction. We observe these changes in the works of Wright Morris, Duane Michals and Sophie Calle by means of three visual and conceptual elements -window, mirror and shadow- which connect the way to know the world and ourselves.
Pham, Quang Long. "Émotions et apprentissage en situation tutorale au travail : le cas d'agents de soin mortuaire." Thesis, Paris, CNAM, 2015. http://www.theses.fr/2015CNAM0999/document.
Full textThis research concerns the role of situated emotions in workplace learning. The chosen empirical field is the one of agents of mortuary care in situation of interaction tutorale in activities which are new for them. The centrality of emotions in this context seems obvious, an obvious fact that we question in putting in object the emotions. Taking of a distance is made with the prescriptive dimensions or a social control of emotions which are besides necessary. We propose to analyse what it takes place upstream to what the subjects « make » emotions, also putting the focal on the fact that the emotions « make for them ». The emotions, from their appearance to their decrease settle a regime of specific activity aiming first of all to reduce this so displayed tension. The undertaken approach aims at observing according to which modalities this reduction of the emotion tension can come along with a formative dimension. So the formulation of hypothesis of research concern the function of the emotions on the trainee and on their fonctionnalisation by the dyade tutorale in a formative aim. The mobilized theoretical referents are mainly taken from the field of the training of the adults, the psychology of the learning, the emotions and the work. From an analysis of the activity of dyades associating tutor and trainee, we retain a multimodal approach of the interactions. The obtained results are two orders : first, a methodological result by the proposal of a methodogy of access to the situated emotions ; then, a theoretical result by the differentiation of functions of the emotions in the tutorale workplace : function of energy mobilization for the subject, function of revelation of significant moments of learning for the subject, and the social function allowing the subjects to coordinate their action